<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
        }
     
        .list {
          width: 990px;
          margin: 0 auto;
          display: flex;
          flex-wrap: wrap;
        }
     
        .item {
          width: 240px;
          margin-left: 10px;
          padding: 20px 30px;
          transition: all .5s;
          margin-bottom: 20px;
        }
     
        .item:nth-child(4n) {
          margin-left: 0;
        }
     
        .item:hover {
          box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.2);
          transform: translate3d(0, -4px, 0);
          cursor: pointer;
        }
     
        .item img {
          width: 100%;
        }
     
        .item .name {
          font-size: 18px;
          margin-bottom: 10px;
          color: #666;
        }
     
        .item .price {
          font-size: 22px;
          color: firebrick;
        }
     
        .item .price::before {
          content: "¥";
          font-size: 14px;
        }
     
        .filter {
          display: flex;
          width: 990px;
          margin: 0 auto;
          padding: 50px 30px;
        }
     
        .filter a {
          padding: 10px 20px;
          background: #f5f5f5;
          color: #666;
          text-decoration: none;
          margin-right: 20px;
        }
     
        .filter a:active,
        .filter a:focus {
          background: #05943c;
          color: #fff;
        }
      </style>
</head>
<body>
    <div class="filter">
        <a data-index="1" href="javascript:;">0-100元</a>
        <a data-index="2" href="javascript:;">100-300元</a>
        <a data-index="3" href="javascript:;">300元以上</a>
        <a href="javascript:;">全部区间</a>
      </div>
      <div class="list">
        <!-- <div class="item">
          <img src="" alt="">
          <p class="name"></p>
          <p class="price"></p>
        </div> -->
      </div>
      <script>
        // 2. 初始化数据
        const goodsList = [
          {
            id: '4001172',
            name: '称心如意手摇咖啡磨豆机咖啡豆研磨机',
            price: '289.00',
            picture: 'https://yanxuan-item.nosdn.127.net/84a59ff9c58a77032564e61f716846d6.jpg',
          },
          {
            id: '4001594',
            name: '日式黑陶功夫茶组双侧把茶具礼盒装',
            price: '288.00',
            picture: 'https://yanxuan-item.nosdn.127.net/3346b7b92f9563c7a7e24c7ead883f18.jpg',
          },
          {
            id: '4001009',
            name: '竹制干泡茶盘正方形沥水茶台品茶盘',
            price: '109.00',
            picture: 'https://yanxuan-item.nosdn.127.net/2d942d6bc94f1e230763e1a5a3b379e1.png',
          },
          {
            id: '4001874',
            name: '古法温酒汝瓷酒具套装白酒杯莲花温酒器',
            price: '488.00',
            picture: 'https://yanxuan-item.nosdn.127.net/44e51622800e4fceb6bee8e616da85fd.png',
          },
          {
            id: '4001649',
            name: '大师监制龙泉青瓷茶叶罐',
            price: '139.00',
            picture: 'https://yanxuan-item.nosdn.127.net/4356c9fc150753775fe56b465314f1eb.png',
          },
          {
            id: '3997185',
            name: '与众不同的口感汝瓷白酒杯套组1壶4杯',
            price: '108.00',
            picture: 'https://yanxuan-item.nosdn.127.net/8e21c794dfd3a4e8573273ddae50bce2.jpg',
          },
          {
            id: '3997403',
            name: '手工吹制更厚实白酒杯壶套装6壶6杯',
            price: '99.00',
            picture: 'https://yanxuan-item.nosdn.127.net/af2371a65f60bce152a61fc22745ff3f.jpg',
          },
          {
            id: '3998274',
            name: '德国百年工艺高端水晶玻璃红酒杯2支装',
            price: '139.00',
            picture: 'https://yanxuan-item.nosdn.127.net/8896b897b3ec6639bbd1134d66b9715c.jpg',
          },
        ]
     
        //1.渲染函数 封装
        function render(arr){
            //声明空字符串
            let str = ''
            //遍历数组
            arr.forEach(item => {
                //解构
                const {name, picture, price} = item
                str += `
                <div class="item">
                    <img src="${picture}" alt="">
                    <p class="${name}"></p>
                    <p class="${price}"></p>
                </div>
                `
            })
            //追加给List
            document.querySelector('.list').innerHTML = str
        }
        render(goodsList)//页面一打开就需要渲染

        //2.过滤筛选
        document.querySelector('.filter').addEventListener('click', e => {
            // e.target.dataset.index  e.target.tagName
            const {tagName, dataset} = e.target
            //判断
            if(tagName === 'A'){
                //返回的新数组
                let arr = goodsList
                if(dataset.index === '1'){
                    arr = goodsList.filter(item => item.price > 0 && item.price <= 100)
                } else if(dataset.index === '2'){
                    arr = goodsList.filter(item => item.price >= 100 && item.price <= 300)
                } else if(dataset.index === '3'){
                    arr = goodsList.filter(item => item.price >= 300)
                }
                //渲染函数
                render(arr)
            }
        })
     
      </script>
</body>
</html>